PHP implements the code to prohibit IP segments from accessing the website_PHP tutorial

There is a prerequisite that our page must be a PHP type page. If you generate an HTML static page, this method is not feasible. Let’s take a look at the PHP code that prohibits IP segments from accessing the website.

代码如下

复制代码

//加IP访问限制 if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) { $userip = getenv('HTTP_CLIENT_IP'); } elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) { $userip = getenv('HTTP_X_FORWARDED_FOR'); } elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) { $userip = getenv('REMOTE_ADDR'); } elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) { $userip = $_SERVER['REMOTE_ADDR']; } $ban_range_low=ip2long("217.0.0.0"); //ip段上 $ban_range_up=ip2long("217.255.255.255");//ip段尾 $ip=ip2long($userip]); if ($ip>$ban_range_low && $ip<$ban_range_up) { print "Banned"; exit(); } ?>

http://www.bkjia.com/PHPjc/629663.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/629663.htmlTechArticleThere is a prerequisite that our page must be a php type page. If you generate an html static page like this The method is not feasible. Let’s take a look at how PHP prohibits IP segments from accessing the network...